The tournament ranking was compiled by analyzing in detail over
300 amateur events, be they with team component or not, that had a
remote chance of making the top 100.
In each case, start field
size and over how many holes/rounds was
carefully documented.
A few event start sizes were "adjusted" eliminating those
clearly not scratch players. The dominant factor
in ranking events is how many top 600 in world amateurs started the
tournament based on the SPWAR as of just before the event begins.
The higher a player is ranked, the greater their inclusion value.

The Scratch Players World Amateur Event
Ranking is the most accurate ranking of amateur competitions ever
created. Event weighting is,
by far, the most important component in any
ranking of golfers and the SPWAR has the most accurate and current event
weighting in the amateur world.
Nothing else is close which is one reason why the SPWAR is the most
accurate ranking of amateurs in golf history.

Event ranking includes the world's top 100
amateur golf tournaments for the 2014 calendar year plus biannual or
date change events last ending in 2013.Event ranking is based on three factors. The number of top
world ranked amateurs factor (field quality) is multiplied times a
rounds factor, and
again by a size factor.The "qual" column is compiled where each top 600 in world
amateur is deemed worth a value depending on a player's ranking level as of just
before the start of each event. The value levels are provided in
the table below. The sum of those values equals the field quality factor.The “rds" factor takes into
consideration all stroke and match rounds. As a general rule, the more
rounds scheduled means the stronger the event all other factors equal.
A "normal" number of rounds includes 72 holes of stroke play and would
get a rounds factor of 1. Rounds for the event ranking means scheduled
rounds irrespective of weather shortening unless shortened by more than
one round.
Weather shortened events in the ranking have their "rds" factor shaded yellow.
Weather shortening does reduce points awarded individually in the SPWAR.The “size” factor is primarily those starting at the
championship with significant consideration for total entries received
for the USGA events which has extensive total entries and qualifying at
many locations national. As a general rule, the larger the start field,
the stronger the event all other factors equal. Start size is
"net" meaning adjusted by eliminating
non-scratch players. A "normal" size field is 80 to 84 players and
would get a size factor of 1. This factor was adjusted slightly
from 2009 to 2010 diluting advantage of larger fields while enhancing
smaller size fields.SPWAR finish position points assigned do not directly correspond
to this event ranking as this ranking is just for the preceding year's
events. SPWAR finish position points are generally based on an
event's average field stats over the preceding three years.SPWAR finish position points have been adjusted based on this
current event ranking for 2015 points awarded.The event ranking was upgraded in 2012 in that the field quality
measure was expanded as follows: - 15 value for world's top ranked
amateur - 14 value for world's #2 ranked amateur - 13 value
for world's #3 ranked amateur - 12 value for world's #4 ranked
amateur - 11 value for ranking of 5-6 - 10 value for ranking of
7-10 - 9 value for ranking of 11-15 - 8 value for
ranking of 16-30 - 7 value for ranking of 31-50 - 6 value for
ranking of 51-99 - 5 value for ranking of
100-199 - 4 value for ranking of 200-299 - 3 value for ranking of 300-399 - 2 value for ranking of 400-499 -
1 value for ranking of 500-600

Again, the applicable ranking position for
purposes of measuring field quality is always as of just prior to the
start of any event. A record of the top 600 worldwide is maintained
every week since 2011 and since the inception of the ranking for the top
500.